The best way I could possibly describe these treats to you might only work on a selected few of you. Back in the 1980's there used to be a variety of candy called “Bonkers”. They where all the rage, and really only faded into obscurity fairly recently. They where most famous for their fruity flavours, however they created one non-fruit flavour and it was chocolate. I loved chocolate Bonkers, I loved them so much that if anybody in the candy world wanted to make them again, I would give you free advertising for a year on Candy Critic for a couple of packs of them.
The good news for me is in my hand right now I have a great little chewy candy that is fairly similar to these chocolate Bonkers candies that I remember from my childhood. The chocolate centre is a little softer and the shape is different, but the flavour is pretty close. I might even go so far as to say that these are a little more chocolaty than chocolate Bonkers, but it’s been a while since I’ve had a chocolate Bonker, so I could be wrong.
I think the keys to the success of these is the chocolate flavour and the nice chewy texture. If they where any harder they would hurt the jaw, and if they tasted fake, it wouldn't be chocolate flavoured. The unfortunate part of this treat is the availability. I've only ever seen them in the Baltic region of Europe, so you might have to travel a little to get your hands on some.